/Engine/Source/Editor/Kismet/Public/BlueprintDragDropMenuItem.h
Attempts to create a certain drag/drop action with respect to the setUBlueprintNodeSpawner.
An emptyTSharedPtrif we failed to determine theFDragDropOperationtype to use, else a newly instantiated drag/drop op.
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FDragDropOperation](API\Runtime\SlateCore\Input\FDragDropOperation) > OnDragged ( FNodeCreationAnalytic AnalyticsDelegate ) const